Friction-clutch.



copi' .UMTED STATES yAfrnNr OFFICE.

REUBEN B. DISBHOW, OF (PWATGNA, MINNESTA.'

FRIGTIN-GEUTGH.

l l' To all' :wire/1c it may concern;

y Be it known that 1,. Rennen BJ- Disnow,

y e citizen of the United States, residing 'at wetonnm in the county of Steele sind State of Minnesota., have liufiventcxi certain new and useful .im rovexnents in Friction- Clutches; end l' n hereby declare the fol lowing to be s full, clear, and exact description of the invention, such ves will. enable.

10 others skilled in the art to which it apperteins to maliennd use the same.

My ini'fention relates to4 friction clutches of that type wherein avsplit ring or bend is frictionelly engaged with a coperatmg 'is cylindrical friction surface, by means of u lever having a .Wedging ect-ion on the seid ring or bandito expand or force the same intol action. b

The invention resides in improved means 2o for adjusting the ring expanding wedge ol illustrate the invention, like characters indicate like ports throughout the several views.

Referring to the drawings, lFigure 1 is a side elevation with some parts broken away, showing the invention incorporated in e vfriction clutch for transmitting motion from apulley to nfs-haft, or vice versn; Fig. 2 is a vertical section teken approximately on the line :r2 ol' Fig 1; Fig. 3 is e plan view showing the expansible clutch ring or band removcclf from Working position and having an improved Wedge acting expended lever connected thereto; F 4l section leken on line ci e* of Fig. 3, some parts being broken away; Fig. 5 is a side elevation el of the expanded lever; Fig. 6 is n side ele- `ration of the supplemental adjustable section ofthe lever removed from the mein nng-n'iber of said lever; and Fig. 7 a view looking et the composite complete expended lever in the direction indicated by the nrrou' marked in Fig. 5.

yThe numeral 1 indicates :i pulley which, in the illustration given in the drawings, is loose on e shaft 2, and is provided at one side with s latemlly projecting cylindricel clutch lienge or ring 3.

Specification of Let-ters ratent.

.Application led November 25, 19111.

Patented Sept. 10, 1912. semi im 662,410.

r:The .numeral 4: indicates the eircumferen tielly expcnsible split friction ring member or band which, es shown, is secured to the spokes 5 of the hub 6,-which hub is rigidly secured to the shaft 2 by e key 7 or other suitable ineens;

reference, particularly, to Fig. 1, it will be noted that the spokes 5 of the hiib 6 are but two vin number and ere located remote. from the ends of, the expensible clutch ring; Il so that the seid ring, while connected for rotation with the hub, may be easily expended. 'The normal spring in the ring. 5 discngeges the seme from copcrntive 'frictional surface oi the pulley lienge 3. At its ends, the expansible ring isp'rovided with inwardly projecting lugs f or end enlargements 8 and 9 which are spaced eport so that thev expanding lever may be interposed' between them. `The inner ffice of the lug 8 is `provided with ratcliet-like'wcdgre surfaceslll, but the inner surface oi the lug 9 is flat.

The improved expanding lever is made up of o. main section 11 and a supplemental section 12. The lever member 1l is provided on Aone fece of its hub with ratchet-like wedge surfaces 13 that engage `with the Wedge surfaces 10 of the lug 8, and on the other face of its hub it is provided with ratchet-like wedge surfeces 14- that engage with the ratchetlike surfaces 15 of the seid supplemental member 12. The hub of the lever member yl1 is provided Withe perfoa tion adapting lt to Work pivotally on ashort trunnion 16 sboiv'n as formed integral with the lng 8. The supplemental member 12 ,is provided with a short trunnion 17 that is pvotally mounted in the seat formed in the4`v .lug 9. ln this Way, the lever mede up of the members 11 and 12 is pivot-ally supported between and connected to the lugs 8 :1nd

5) ot' the expnnsible clutch ring Il. The

member l2 is pivotally adjustable in respect to the moin member 11 and is adapted t0 be rigidly secured Where set, by a short nutted bolt 18. This bolt 18 is passed through perfortions in the member 11 .and Works through egslot 19 in the member 12. By reference to Figs. l and 7, it lvvill be seen that the radially projecting portion of the member 12 in which the slot 19 is located, is made wedgesheped and that its inclined face engages en inclined fece formed on the abutting portion of the member 11. As is evident, when the supplemental member 12 between the trictionally f adapted for use Aivlien the tree end ot theV said composite lcveris moved pivotally from theposition shown in l toward the right. rlhis latterally expansible or adjustable expanding lever may, therefore, be primarily set for proper action and when ivear takes place engaging portions of the clutch members 3 and 4, `the said lever may be adjusted and increased in thickness in'its hub portion so such Wear. The setting of the clutch` as stated, is, ot course, due to the cam'action between the wedge surfaces 10 and 13, respectively, oi a lug 8 :ind main lever meniber 11. For securing such adjustments to the expanded lever1 thc free end ot the meinber 11 is shown as connected by a link 0 in an ordinary grooved shipper collar 21, which is adapted to be moved by suitable connections, as shown.

The device abovedescribed is extremely simple, highly elicient for the purposes had in view and may be applied at extremely small cost. It is, as already indicated,

in what is generally designated as friction clutches, and is also adapted for use in friction brakes of the same general character.

What Iclaim is:

1. A clutch ring eX anding member made up of main and supp emental sections conneeted and provided with Wedge surfaces for varying the thickness of thesaid expanding member when one of the said sections is adjusted in respect to the other.

' 2. A. clutch ring expanding lever made up as to compensate for ally connected and provided with Wedge surfaces for varying the thickness of theA lever when one of the said members is adjusted in respect to thc other.` i

3. A clutch ring expanding lever made up ot main and supplemental sections havling engaging wedge surfaces for varying the thickness of the said lever, one of the said members having a segmental slot, and a bolt cooperating with the said slot to secure the said members in different. adjust ments iii respect to 'each other.

l. In a friction clutch, the combination with an expaiisible clutch ring, of a ring .expanding lever pivotally connected b ej tween the ends of the said ring and having wedge surfaces engaging the same, and which lever is made up ot main and supplemental sections having engaging wedge surtaces i'or expanding the operative portion of the said lever, and means for securing the different adjustments.

5. ln a friction clutch, with an expansible `recess and a boss, of a ring expanding lethe combination of the said ring and having Wedge surtaces engagin the same, and Which lever is made up o main and supplemental seclever and means for securing the said main said main and supplemental lever sections inv ver pivotally connected bet-Ween the ends and supplemental lever sections in differentclutch ring having a tions having engaging Wedge surfaces for ,l expanding the operative portion of said' 

